From: Yu Kuai <yukuai3@huawei.com>
Currently, raid0_make_request() will remap the original bio to underlying
disks to prevent disordered IO. Now that bio_submit_split_bioset() will put
original bio to the head of current->bio_list, it's safe converting to use
this helper and bio will still be ordered.
On the one hand unify bio split code; On the other hand fix missing
blkcg_bio_issue_init() and trace_block_split() for split IO.
CC: Jan Kara <jack@suse.cz>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
drivers/md/raid0.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 4dcc5133d679..8773f633299e 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -607,17 +607,9 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
: sector_div(sector, chunk_sects));
if (sectors < bio_sectors(bio)) {
- struct bio *split = bio_split(bio, sectors, GFP_NOIO,
- &mddev->bio_set);
-
- if (IS_ERR(split)) {
- bio->bi_status = errno_to_blk_status(PTR_ERR(split));
- bio_endio(bio);
+ bio = bio_submit_split_bioset(bio, sectors, &mddev->bio_set);
+ if (!bio)
return true;
- }
- bio_chain(split, bio);
- raid0_map_submit_bio(mddev, bio);
- bio = split;
}
raid0_map_submit_bio(mddev, bio);
--
2.39.2